Characterization of Alkali Impurities in Quartz,
Abstract
We report acoustic loss measurements from room temperature to above 500 degrees of C on resonator disks fabricated from high-grade as-grown and swept synthetic quartz, containing both Li(+) and Na(+) alkali impurities. As-grown quartz disks showed an exponential rise of acoustic loss 1/Q with temperature T, starting above 200 degrees of C. Swept samples show the onset of a rise above 400 degrees of C and show high-temperature losses which increase irreversibly with time and are tentatively attributed to the presence of residual alkali. Loss peaks above 300 degrees of C were found in the swept disks. Some of these disappear after exposure to temperatures above 400 degrees of C.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1982
- Accession Number
- ADP001511
Entities
People
- Alfred Kahan
- Alton F. Armington
- Ferdinand Euler
- Herbert G. Lipson